While looking at building the fop distribution I noticed that the Ant project has switched (don't know when) from having ant.sh (for *nixes) and ant.bat (for Win) to ant (for *nixes) and ant.bat. This means the command to invoke the program is the same on Unix and Windows.
Personally I like that change (never favored typing <command>.sh instead of just <command>) and suggest we make the same change for FOP. Also makes documentation simpler as the command line invocation is the same everywhere. +1 from me Manuel